[rfc][patch] DriverFS Topology + per-node (NUMA) meminfo

[Matthew Dobson]

Good afternoon,
	Here's I've been sitting on a bit too long.  This patch adds Topology 
information to driverfs, and adds a meminfo file to each node's 
directory which contains: <drum roll> that nodes memory info!
	Pat, I got rid of the per-arch callbacks, since they weren't doing 
anything even remotely useful yet, and they bloated the patch even 
further.  I left in the arch_info pointers so we can put the arch 
specific callbacks back in if anyone wants...  I've also rolled Martin's 
/proc/meminfo.numa patch into this.
	BTW, I have a patch that will changes the usage of 'int numnodes' into 
the more generic 'num_online_nodes()' and 'node_set_online()' calls. 
I'll be sending that patch momentarily also.
	As always: comment, question, and flame away!

Cheers!

-Matt